<template>
  <view class="">
    <view class="cart-container" v-if="cart.length>0">
      <!-- 收获地址 -->
      <my-address></my-address>
      
      <!-- 购物车商品列表的标题区域 -->
      <view class="cart-title">
        <!-- 左侧的图标 -->
        <uni-icons type="shop" size="18"></uni-icons>
        <!-- 描述文本 -->
        <text class="cart-title-text">购物车</text>
      </view>
      
      <!-- 购物车列表 -->
      <view>
        <my-goods 
          :goods="item"
          :showRadio="true"
          :showNumber="true"
          @raido-change="radioChangeHandler"
          @num-change="numChangeHandler"
          v-for="(item, i) in cart" :key="i">
        </my-goods>
      </view>
      
      <!-- 结算栏 -->
      <my-settle></my-settle>
    </view>
    
    <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <image src="/static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
    
  </view>
</template>

<script>
  
  import { mapState, mapGetters, mapMutations } from 'vuex'
  // 导入minxin公共处理逻辑
  import badgeMix from '@/mixins/tabbar-badge.js'
  
  export default {
    mixins: [badgeMix], 
    data() {
      return {
        
      };
    },
    computed: {
      ...mapState('m_cart', ['cart']), // 把vuex中cart模块下的getters之一total注入到当前页面中
      ...mapGetters('m_cart', ['total']),
    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount']),
      // 子组件调用父组件传递的函数
      radioChangeHandler(e){
        console.log(e)
        // 更新vuex中cart的数据
        this.updateGoodsState(e)
        
      },
      numChangeHandler(e){
        console.log(e)
        // 更新vuex中cart的数据
        this.updateGoodsCount(e)
        // this.setBadge()
      }
      // 设置页面徽标数值
      // setBadge(){
      //   uni.setTabBarBadge({
      //     index: 2,
      //     text: this.total+''
      //   })
      // }
    }
  }
</script>

<style lang="scss">

  .cart-container{
    padding-bottom: 50px;
    .cart-title {
      height: 80rpx;
      display: flex;
      align-items: center;
      padding-left: 12rpx;
      border-bottom: 1px solid #efefef;

      .cart-title-text {
        margin-left: 20rpx;
      }
    }
  }
  .empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
  
    .empty-img {
      width: 90px;
      height: 90px;
    }
  
    .tip-text {
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }

</style>
